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The Forever Compact 7″ Flashlight uses no batteries or bulbs. Instead it uses Faraday’s Principle of Magnetic Induction and a bright LED to produce light without batteries. The flashlight is shaken for about 30 seconds to recharge a capacitor and it will then provide about 5-7 minutes of light. How does this happen? As the flashlight is shaken, a magnet passes through a metal coil which, when you shake, “induces” voltage in the coil generating electricity. During prolonged use it can be shake…
If batteries could be charged from the friction of scrolling, our phones would never die.(r/Showerthoughts)
I think you vastly overestimate the amount of energy generated thru friction. Even if you harnessed all of it, the charge would be negligible.
A better idea would be to capture the energy from jostling/shaking your phone. It’s still small, but they do make flashlights that work this way: www.amazon.com/Forever-Light-Shake-Flashlight/dp/B…
| Subreddits | Showerthoughts |
|---|---|
| Number Of Links | 1 |
| Sum Of Upvotes | 987 |
| Amazon Price | $0.0 |
| NSFW Product | SFW |
| Product Type | Misc. |
| Type Code | TOOLS |
